Have they made a determined and good faith attempt to do so? Sending out emails and social media call outs isn't that serious of an effort. Can't WTA afford to send somebody to China and see for themselves? Have they made an attempt at that?
WTA seems to be looking for reasons to burn bridges, rather.
Point is WTA needs to make abundantly clear the steps they have taken of their own accord to address their concerns rather than focusing mostly on casting aspersions.